Lock



March 7, 1933.

' G. A. LONG LOCK Original Filed- NOV. 18, 1927 45 u box, whereupon the operation of unloclng Patented` Mar. k7, 1933 l UNITED STATES PATENT volflflciazlg Vf 7i GEORGE A. LONG, or IIARTEORn CONNECTICUT, VAssICfNOE TO THE LONG' SECURITY Loox COMPANY, or HARTFORD, CONNECTICUT, A CORPORATION or oONNECTICIrr;`lr

Original application led. November `18, 1927, Serial No. 234,258. Divided and this application lred Hay n L y 1e, 1930. serial No. 452,938. l

e, My invention relates to -that class of devices which are employed for securing doors and slmilar closures, and an ObJect of my 1n- .vention, among others, is the provision of means for simplifying the act of operating Va. lock `for such closures. I y v Y One formof device embodying myy inventionA and; in the constructionV and use of which the objects herein set out', as well as others,

.may be attained, is illustrated in the accompanyingdrawing, in .which-a Y Figure 1 is a faceview of my improved key. Figure 2 is an endy view of thelsamel. Y Figure 3 is a face view showing oneof the key members partially removed from the Y other member and completely removed from Y a lock, a portion of which is shown 1n section.

Figure 1 is an isometric view showing the l two key members substantially separated.

Figure 5 is a facevew of a lock used in connection with *myimproved key. I

Figure 6 is an yedge View ofthesame. .Y

Figure 7 'is a View in section on a` plane denoted bythe dotted line-7 7 of Figure 9.

Figure 8 is a view similar to Figure 7 butv with the locking bolt inits unlocked position.

Figure k9 is a view in section on a plane vdenoted by the dotted line 9,-9 of Figure 7.

v Many locks lin use at the present time cmbodymechanisms requiring the use oli/two keys for the operation vthereof tov gain access to thecompartment closed by the door-or other closure to which the lock isaiiixed. Such instances are commonI in safe deposit boxes or similar compartments in banks or other places wherein a key possessed bythe :custodian or guard of the boX is required vto effect a portion of the unlocking operation,

and the key of the person rentingy thebox'is .required to complete the operation: to release the 'lockingelement Tn this operation the the operation partially performedfthereby, the custodians key thenfremoved .to permit key of thecustodian must be first inserted,

insertion. of the key of theperson renting the ving,application Serial Number 234.-,258,.filed VNovember 18, 1927 on which issued myPatent No. v1,7 65,280, dated June 17, 1930, the claims of this present application having been formerly embodied in the application of said patent. Y

fore mentioned. is greatly simplified inthat onlyoneoperation is required to eiiect open,- ing ,movement of thelock mechanism `and necessitating one insertion only of the key.v

tumblers inthe various sets may be of diEer- Y ent types, and said sets may be variously arranged, `the` mechanism herein illustrated very satisfactorily answering the purpose and embodying a set 11 of pin tumblers placed in a well known manner inv connectionwith a barrel or key center 12 rotatably mounted in the case, and a set of flat Or'leaf tumblers 13A pivotally mountedin the case'. The KVVpin tumblers 'are operated by the'key to release or ysecure the'barrel o r keyfcenter and the flat or leaf tumblers operate tojrelease or secure the locking bolt in a manner that will be readily understood'.v 1-

. My improved key isv composedpreferably of two members 14.-15,divided `lengthwise such-members within the key center or barrel that is rotated to operate a locking bolt 16. In the structure herein shown the -key member 14 is bitted or notched to receive the pin tumblers, ,and the member 15 is provided with angularly shaped bits or notches properly arranged to operate theleaf or flat tumblers. When ythe key has been operatedcto partially -1 rotate the barrel the member 14 Lmay-bere'- moved, the'member lybeing retainedin the barrel and, in fact, being 'securedtherein land having means for removableinsertion of l 55 By the use of myimproved key, illustrated Y and described herein, the operation hereinbe-V ing notch 17 to receive a lip 18 extending around the central opening in an escutcheon 19, in which opening the outer end of the key center or barrel 12 is located. Entering notches are formed in the lip 18, as shown in Fig. 5,'and a key releasing notch 21 is also formed in said lip.

In order that the two members of the key may be securely, temporarily held together one ofsaid members', as the member 15, has a sloping shoulder 22 that the end of the section 14 isvfitted to. A thumb piece 23 of the section 14 has an elongated lug or rib 24 that is received in a slot 25 in a thumb piece 26 of the key member 15. A bridge 27 closes the ends of the slot 25 and is arched, as shown in Fig. 4, thereby forming a groove 28 to permit passage of the lug 24 underneath the bridge.

In the operation of the key in connection with the lock mechanism, for instance as that of a safe deposit box, the custodian or guard takes the separable key member 15 from the AVpossessor of the boX and attaches it to the separable key member 14 in the custody of said guard,'and as shown in Figl. rEhe assembled key is then inserted in the lock having the parts in the position shown in 7 of the drawing. The key member 14 will place the pin tumblers 11 with their ends all -flush with the mouths of their respective openings, thus enabling the barrel or key center 12 to be rotated. rlhe key now being turned' in a clockwise direction to the position shown in Fig. 8, wherein the shoulder ou one side of the notch 17 will be located opposite the releasing notch 21, the key member 14 may be removed by sliding it relatively with respect to the key member 15, and as illustrated in Fig. 4. rllhe member 15 of the box owner, however, cannot be removed when in this position for the reason that the inner shoulder of its notch 17 is against the inner surface of the lip 18.

The operation above described, however,

'has unlocked the door, the parts of the lock being in the position shown in Fig. 8, and said door may be opened. When the door is again closed, all that is required to lock it is to turn the key member 15 that has been retained in the lock in a contra-clockwise direction. or to s the left, when the locking members will be returned to the position shown in Fig, 7, and thefbox door will 'be locked. The key member 15 may now be readily removed from the lock.

It will thus be seen that in place of two keys I have produced a single key composed of two members, and the complete key is operated in the same manner as a singlekey, but at the end of the unlocking operation with respect to the key center or barrel one l member of the key may be removed, leaving the other member to be made use of in continuing the unlocking operation.

1t should here be noted that the location of the notch 21 governs the position of the key when the section 14 may be removed, and while, in the structure shown, this is at a point where a stop is provided at the completion of the unlockingoperation, such notch may be located tovpermit removal of the section 14 at any time after the Vbarrel 12 has been turned from its normal locking position.

It may further be noted that the blades of the two key members are located in the same plane by offsetting one or both `of said blades from the plane of its thumb piece. 1n the structure herein shown the blade of the `key member 15 is entirely offset from the plane of its thumb piece into the plane of the thumb piece of the key member 14.

Itv is here briefly stated that the lock shown is of that type wherein the tumblers 13 have notches adapted to register with detents 29 to permit the locking'bolt to be drawn back, the tumblers of that part of the set 11 not located in the barrel 12 being located in the tumbler block 80. VThe barrel 12 has van arm 31 to enter a notch in the side of the locking bolt for the purpose of moving said bolt when permitted by the tumblers 13 which are properly located for that purpose by the bits on the key member 15. y

This application is a division of my. co-

pending application S. No. 284,258,1iled November 18, 1927, and is for the purpose of covering a portion of the invention divided out of said co-pending application. v

` In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together f" with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative, and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim- 1. A lock including a key receiving conur troller member, locking elements therefor,L t) a bolt and locking elements therefor,lsaid parts being adapted to be operated by a-twopart key havingV one part operable to release said controller member locking elements for ,.106 movement of the controller to its advanced L position and the other operable to release said locking bolt locking elements, said lock also including means to permit vremoval of one of said key parts with the controller member in its advanced position after it has been moved from its key entrance position.

2. A lock including a key receiving controller member, locking elements therefor, a bolt and locking elements therefor, said Aparts being adapted to be operated by a separable two-part key having oppositely disposed Working edges, one part comprising one of said edges being operable to release said controller member locking elements and the other part comprising the other Working edge being operable to release said locking bolt locking elements, said lock also including means to permit removal of one of said key parts With the controller member in its advanced position after it has been moved from its key entrance position.

GEORGE A. LONG. 

